Lower back exercise device



FIG. 1 is a perspective view, showing my new design;

FIG. 2 is a right-side elevational view;

FIG. 3 is a left-side elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a front elevational view;

FIG. 6 is a top plan view;

FIG. 7 is a bottom plan view; and,

FIG. 8 is an alternate perspective view, showing the device in use.

The broken lines illustrate environmental structure and form no part ofthe claimed design.

CLAIM The ornamental design for a lower back exercise device, as shownand described.